Yihua Yan¹, Wei Wang², Fei Liu³, Linjie Chen², Lihong Geng³, Zhijun Chen³, Lijia Liu⁴, Ming Xiong⁵, Xueshang Feng⁶, Jiansen He⁷ and Xiaoxin Zhang⁸, (1)National Astronomical Observatories, Beijing, China, (2)National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China, (3)CAS KLSA, NAOC, Beijing, China, (4)NAOC, Beijing, China, (5)CAS Chinese Academy of Sciences, Beijing, China, (6)National Space Science Center, Beijing, China, (7)Peking University, Beijing, China, (8)China Meteorological Administration, Beijing, China